oops!! I forgot add i386/i386/smp.h and i386/i386/smp.c to i386/Makefrag.am
I will try to fix the patch to add this El mar., 11 ago. 2020 a las 23:03, Almudena Garcia (< liberamenso10...@gmail.com>) escribió: > I attach a new set of patches. I wait this time will be better than last > time > > El mar., 11 ago. 2020 a las 2:27, Almudena Garcia (< > liberamenso10...@gmail.com>) escribió: > >> > So don't bring them online then? The user asked for 4 CPUs, so bring up >> > 3 APs alongside the BSP and that's that. >> It's not a bad idea. Then I will fix my cpu enumeration loop to add this >> new condition. >> >> El mar., 11 ago. 2020 a las 2:23, Jessica Clarke (<jrt...@jrtc27.com>) >> escribió: >> >>> On 11 Aug 2020, at 01:17, Almudena Garcia <liberamenso10...@gmail.com> >>> wrote: >>> > >>> > > That being said, instead of hardcoding the maximum number of CPUs to >>> > > be 256, you can just let the user choose whatever value is preferred. >>> > > That's what Linux does. >>> > >>> > But this could cause coherency problems. >>> >>> Coherency is a very specific thing in operating systems about the >>> properties of the underlying memory subsystem. It's not the word you're >>> looking for. >>> >>> > By example, if the user sets mach_ncpus=4 , and the processor has 8 >>> cores, It can produce an out-of-index error in the access to the arrays >>> which store the info about the cpus. >>> >>> So don't bring them online then? The user asked for 4 CPUs, so bring up >>> 3 APs alongside the BSP and that's that. >>> >>> Jess >>> >>>
